How to write a short message when the child is sick and asks for leave from the leader?

I am an employee of your company. My child is ill and needs to be taken care of. Therefore, I want to take a day off so that I can take care of my children and deal with family affairs. I will try my best to arrange my work to ensure that it will not have any impact on the work of the company.

Thank you very much for your understanding and support!

I am here to convey

Salute!

XXX (your name)